Salufer
氟硅酸钠
🗣️ 情景例句
She's still giving the toughest English history exams
她仍用最艰深的英国史试题考学生
No cross, no crown.
无苦即无乐。
Admittedly it was an unusual pie dish, for it was eighteen feet long and six feet wide.
这个馅饼盘子确实少见，有18英尺长，6英尺宽。